Time-dependent computational fluid dynamics (CFD) has been used to predict aerospace vehicle aerodynamics during a subsonic rotation maneuver. The inviscid 3D3U code is employed to solve the 3-D unsteady flowfield using an unstructured grid of tetrahedra. As this application represents a challenge to time-dependent CFD, observations concerning spatial and temporal resolution are included. It is shown that even for a benign rotation rate, unsteady aerodynamic effects are significant during the maneuver. Possibly more significant, however, the rotation maneuver creates flow asymmetries leading to yawing moment, rolling moment, and side force which are not present in the quasi-steady case. A series of steady solutions at discrete points in the maneuver are also computed for comparison with wind tunnel measurements and as a means of quantifying unsteady effects.


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    Title :

    Aerodynamic Characteristics of an Aerospace Vehicle During a Subsonic Pitch-Over Maneuver


    Contributors:
    W. L. Kleb (author)

    Publication date :

    2004


    Size :

    16 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English







    Strategy for pitch-over maneuver control

    Leite Filho, Waldemar / Mallaco, Lais | AIAA | 1999


    Strategy for Pitch-Over Maneuver Control

    Leite Filho, W. / Mallaco, L. / AIAA | British Library Conference Proceedings | 1999